BHA (Butylated Hydroanisole).

BHA was the mixture of 2 isomers that is 2- and 3-tertbutilhidroksianisol.
Around to two isomers, the isomer 3-tert had the activity anti oxide that was more effective than the isomer 2-tert.
The physical form from BHA was white solid matter resembled the candle, was protracted in fat and not protracted in water